Commercial Air Conditioning
SERVICE MANUAL
Models
Features
High energy efficiency
Infrared control type or wired control type
Low ambient cooling kit (optional) and low ambient heating kit (optional)
New friendly refrigerant R410a, environment protection
Advanced technology, DC inverter control function
Weekly timer (standard)
Group control function
Auto restart function
Room card function
AB122ACERA
AC122ACERA
AD122ALERA
AU122AEERA
Can be connected with the universal outdoor unit AU122AEERA
Manual code: SYJS-020-07REV.0 Edition: 2007-05-15
2
CONTENTS
Contents………………………………………………………...2
1. Description of products & features………………………..3
2. Specification…………………………………………………7
Commercial Air Conditioner Model: AU122AEERA AB122ACERA
AC122ACERA AD122ALERA
3. Safety precaution…………………………………………..10
4. Net dimension………………………………………………12
5. Installation instructions………..…………………………...14
6. Parts and functions…………………………………………30
7. Controller functions…………………………………………32
8. Refrigerant circuit…………………………………………...33
9. Electrical control functions…………………………………34
10. Electrical data………………………………………………49
11. Troubleshooting …………….....………………………….57
12. Noise level.....................................................................61
Commercial Air Conditioner
3
1.1. Products code explanation
Climate type: T1 (see table 1)
Design number (R stands for design sequence, DC inverter
frequency type)
Product type: A stands for heat pump type, refrigerant is R22
B stands for heat pump type, refrigerant is R407C
E stands for heat pump type, refrigerant is R410a
Q stands for cool only type, refrigerant is R410A
Outlook appearance
Product series: A stands for 1 to 1
Applicable voltage: 2 stands for 220~230V/50Hz,
4 stands for 220V/60Hz，N stand for 380~400VAC/50Hz
Product type : “B” stands for cassette type, “C” stands for
convertible type, ”D” stands for duct, “S” stands for wall
mounted type, ”Q” stands for chiller system, "E" stands for
ceiling concealed type, “U” stands for outdoor unit
Air Conditioner
1.2 Brief Introduction for T1、T2、T3 working condition
1.3 Operating Range of Air Conditioners
Temp. Mode Rated Maximum Minimum
DB ℃
27 32 15
Indoor
WB ℃
19 23 14
DB ℃
35 43 -5
Cooling
Outdoor
WB ℃
24 26 6
DB ℃
20 27 10
Indoor
WB ℃
14.5 --- --
DB ℃
7 23 -10
Heating
Outdoor
WB ℃
6 18 ---
Climate type
Type of Air
Conditioner
T1 T2 T3
Cooling Only
18 ℃~43℃ 10℃~35℃ 21℃~52℃
Heat pump
-7℃~43℃ -7℃~35℃ -7℃~52℃
Electricity Heating
~43℃ ~35℃ ~52℃
Model: AU122AEERA AB122ACERA
AC122ACERA AD122ALERA
1.DESCRIPTION OF PRODUCTS & FEATURES
A C 12 2 A C E R A
Cooling / Heating capacity, 12=12000BTU/h
Commercial Air Conditioner
4
1.4 Product features
Adopt the much friendlier refrigerant R410a
The air conditioner system adopts the greatly friendly refrigerant R410a, which is protective for the
ozone layer and is good to avoid the earth getting warmer. Benefit for the environment.
Adopt the advanced DC inverter technology
The system adopts the advanced DC inverter technology, which can consume less power energy to
realize the equal efficiency, saving money for you.
Smart newly designed infrared remote controller
Auto–restart function (optional)
All indoor units have auto-restart function. When the power supply cut off suddenly, the unit will
automatically recover the previous running mode once the power supply is on.
Low temperature cooling realized, super low temperature heating
realized.
Low ambient cooling kit (optional)
Group control function (with a group controller YR-E12)
Central control function, if connected with a central controller
YCZ-A001
Weekly timing function, if connected with a weekly timer YCS-A001
Model: AU122AEERA AB122ACERA
AC122ACERA AD122ALERA
The cassette and convertible unit can be controlled by the infrared remote controller YR-H71, the remote
controller can be fixed with a remote controller holder.
Long-life& high efficiency air purify filter
Commercial Air Conditioner
5
1.5 New friendly refrigerant R410A introduction:
■R410A
The working pressure of R410A is approximately 1.6 times higher than R22. Because the oil in the
refrigerant is different, please do not mix them.
Refrigerant R22 (single) R410A (mixed) R407C (mixed)
Oil Mineral oil (SONTEX 200LT) Synthetic oil (POE oil) Synthetic oil (POE oil)
Pressure ratio 1 Approx. 1.6 Approx. 1.1
■Operation flow
1. Calculate the refrigerant additional charging
amount, and charge a suitable amount.
1. Air purging by refrigerant is prohibited seriously
2. Use a special vacuum pump with reverse check
mechanism
1. Charge the nitrogen to the set pressure
2. 24 hours later,check if the pressure in the pipe
has reduced
1. Do not connect the power supply
1. Use piping material of the specified thickness
2. Do not use dirty pipe
3. Always flow nitrogen during welding work
hand over
trial running and adjustment
maintenance panel installation
gas leakage check
additional refrigerant charging
evacuation and drying
leakage test
refrigerant piping connection
outdoor unit installation
outdoor unit foundation work
electric wiring work
remote controller installation
insulation work
duct work
drain piping work
refrigerant piping work
indoor unit installation
operation chart preparation
1. Always inspect the used refrigerant
2. Always use the specified refrigerant
refrigerant inspection
prepare work schedule
Model: AU122AEERA AB122ACERA
AC122ACERA AD122ALERA
Commercial Air Conditioner
6
■Piping material
1. Use the correct refrigerant piping and materials for R410A
2. For the pipe wall thickness, see the table below:
Pipe diameter Φ6.35 Φ9.52 Φ12.7 Φ15.88 Φ19.1
Pipe wall thickness 0.8 0.8 0.8 1.0 1.2
Note: Always observe and comply with the local regulations when installing the refrigerant piping.
■Tools
R410A work requires a number of special tools (* symbol). Since the tools used in R22 work
cannot be used for R410A, provide the tools separately.
Tool name Process and application
Pipe cutter Piping cutting
*Flaring tool Pipe flaring work
*Torque wrench Flare nut connection
Expander Expansion at pipe connection
Pipe bender Pipe bending work
Refrigerant piping work
Nitrogen gas Pipe oxidation prevention
Welder Pipe brazing
Air tightness test
*Gauge manifold
*Charging hose
Vacuum evacuation and refrigerant
charging operation check
Air tightness test
Refrigerant additional
charging
*Vacuum pump (with
adapter)
Vacuum drying
Electronic scale
Gas leakage detector Gas leakage test
Refrigerant additional
charging
■Work precautions
Refrigerant check: Before work, check the used refrigerant and prepare materials matched to the
refrigerant.
Refrigerant piping: Observe the basics of refrigerant piping to avoid the unnecessary problems. In
addition, when performing the welding work, seal in the nitrogen gas to the pipes, and prevent it
from the oxidation.
Leak pressure detection: Perform seal detection and make sure there is no refrigerant leakage.
Vacuum drying: If the vacuum pump has not the reverse flow check mechanism, use the pump
together with a reverse flow check adapter.
Additional refrigerant: Charge a suitable amount of refrigerant with a special R410A gauge
manifold and charging hose.
Model: AU122AEERA AB122ACERA
AC122ACERA AD122ALERA
Commercial Air Conditioner
2. SPECIFICATION
Function
coolin
g
heatin
g
Capacity kW 3.52(0.9--4.4) 4.4(1.0---4.8)
Sensible heat ratio 0.71
W 1250(280---1650) 1210(280--1650)
W 1650 1650
EER or COP
W/W
2.81（C） 3.64（A）
Dehumidifying capacity
10‐³×m³/h
Power cable
Power source N, V, Hz
A / A 6.0(1.4--8.0)A/8A 6.0(1.4--8.0)A/8A
Start Current A 3 3
Circuit breaker A 13 13
Unit model (color)
Type × Number
Speed(H-M-L) r/min
Fan motor output power kW
Air-flow(H-M-L) m³/h
Type / Diameter mm
Total Area m²
Temp. scope
℃
External
（L×W×H）
mm×mm×mm
Package
（L×W×H）
mm×mm×mm
Drainage pipe (material , I.D./O.D.) mm
Control type (Remote /wired)
Fresh air hole dimension mm
dB(A)
kg / kg
External
（L×W×H）
mm×mm×mm
Package
（L×W×H）
mm×mm×mm
kg / kg
Function cooling heating
Capacity kW 4.1(0.9--4.6) 4.4(1.0---5.1)
Sensible heat ratio 0.71
W 1270(280---1650) 1210(280--1650)
W 1650 1650
EER or COP
W/W
3.23（A） 3.64（A）
Dehumidifying capacity
10‐³×m³/h
Power cable
Power source N, V, Hz
A / A 6.0(1.4--8.0)A/8A 6.0(1.4--8.0)A/8A
Start Current A 3 3
Circuit breaker A 13 13
Unit model (color)
Type × Number
Speed(H-M-L) r/min
Fan motor output power kW
Air-flow(H-M-L) m³/h
Type / Diameter mm
Total Area m²
Temp. scope
℃
External
（L×W×H）
mm×mm×mm
Package
（L×W×H）
mm×mm×mm
Drainage pipe (material , I.D./O.D.) mm
Control type (Remote /wired)
dB(A)
kg / kg
item Mod
e
AB122ACERA
Total power input
Max. power input
ENERGY CLASS
1.5
3×2.5
1, 220--230, 50
1.6
Running
Indoor unit
AB122ACERA(BLACK)
Fan
Centrifugal fan*1
795/690/550±50
0.065
700/620/520
Heat exchanger
inner grooved pipe/φ7
0.272
2-7
Dimension
570×570×260mm
718×680×380mm
Noise level (H-M-L)
45/40/32
PVC 26/32
Remote
95
Weight (Net / Shipping)
18.5/23
Panel
Dimension
700×700×60mm
740×750×115mm
Weight (Net / Shipping)
3.5/4.5
Item Model AC122ACERA
Total power input
Max. power input
1.6
3×2.5
1, 220--230, 50
Running
Indoor unit
AC122ACERA(WHITE)
Fan
Centrifugal fan*2
1200/1080/880
0.09
750/650/550
Heat exchanger
inner grooved pipe/φ7
0.20
2-7
Dimension
1090×655×199
1150×750×300
PVC 18/20
Remote
Noise level (H-M-L) 46/44/42
Weight (Net / Shipping) 28.3/34.3
Model: AU122AEERA AB122ACERA
AC122ACERA AD122ALERA
7
Commercial Air Conditioner
8
Function cooling heating
Capacity kW 3.8(0.9--4.4) 4.1(1.0---4.8)
Sensible heat ratio 0.71
W 1260(280--1650) 1260(280--1650)
W 1650 1650
EER or COP
W/W
3.02（B） 3.25（C）
Dehumidifying capacity
10‐³×m³/h
Power cable
Power source N, V, Hz
A / A 6.0(1.4--8.0)A/8A 6.0(1.4--8.0)A/8A
Start Current A 3 3
Circuit breaker A 13 13
Unit model (color)
Type × Number
Speed(H-M-L) r/min
Fan motor output power kW
Air-flow(H-M-L) m³/h
Type / Diameter mm
Total Area m²
Temp. scope
℃
External
（L×W×H）
mm×mm×mm
Package
（L×W×H）
mm×mm×mm
Drainage pipe (material , I.D./O.D.) mm
Control type (Remote /wired)
dB(A)
kg / kg
Power cable
Power source N, V, Hz
Start Current A
Unit model (color)
Model / Manufacture
Type
Type × Number
Speed r/min
Fan motor output power kW
Air-flow(H-M-L) m³/h
Type / Diameter mm
Total area m²
Temp. scope
℃
External
（L×W×H）
mm×mm×mm
Package
（L×W×H）
mm×mm×mm
Refrigerant control method mm/mm
Noise level dB(A)
material of reduce noise
crankcase heater power W
kg / kg
Type / Charge g
Recharge quantity g/m
Liquid mm
Gas mm
Connecting Method
m
m
Item Model AD122ALERA
Total power input
Max. power input
1.6
3×2.5
1, 220--230, 50
Running
Indoor unit
AD122ALERA(GREY)
Fan
Centrifugal fan*1
1000/900/800±50
0.05
550/450/400
Heat exchanger
inner grooved pipe/φ7
0.11
2-7
Dimension
610×483×220
695×536×265
20/18
wired
Noise level (H-M-L) 35/32/30
Weight (Net / Shipping) 14/16
Item Mod
e
AU122AEERA
3×2.5
1, 220-230, 50
3
Outdoor unit
AU122AEERA（WHITE）
Compressor
C-6RZ092H1A
twin rotary
Fan
axial*1
840r/min±50
0.06
2500/-/-
Heat exchanger
TP2M/Φ9.52
0.374
43-60
Dimension
775x640x245
901x341x712
Capillary tube: main φ3×φ1.8×920，assistant φ3×φ1.8×780
Defrosting
auto
55
Type of Four way valve
SHF-4-10A
XPE
37
Weight(Net / Shipping)
39/43
PIPING
Refrigerant
R410A 1300
30
Pipe
6.35
12.7
flared
Between I.D &O.
MAX.Drop 10
MAX.Piping length 20
Norminal condition: indoor temperature (cooling): 27℃DB/19℃WB, indoor temperature (heating): 20 ℃DB/14.5℃WB
Outdoor temperature(cooling): 35℃DB/24℃WB, outdoor temperature(heating): 7 ℃DB/6℃WB
The noise level will be measured in the third octave band limited values, using a Real Time Analyser calibrated sound
intensity meter. It is a sound pressure noise level.
Model: AU122AEERA AB122ACERA
AC122ACERA AD122ALERA
Commercial Air Conditioner
mounting-on-ceiling unit:
Note: ⊙ is the real
time analyser
Norminal condition: indoor temperature (cooling): 27℃DB/19℃WB, indoor temperature (heating): 20℃DB
Outdoor temperature(cooling): 35℃DB/24℃WB, outdoor temperature(heating): 7℃DB/6℃WB
The noise level will be measured in the third octave band limited values, using a Real Time Analyser calibrated sound intensity meter.
It is a sound pressure noise level. The detailed method please refer to the following information:
duct unit without auxiliary duct: duct unit with auxiliary duct:
outdoor unit:
1.air outlet from side: the noise level is the average sound pressure level measured from front, left, right directions.
2.air outlet from top: the noise level is the average sound pressure level measured from front, back, left, right directions.
measured point:
H ( height to the ground) = (h (unit height) + 1m) /2
and, it is 1m to each side.
I
ns
t
a
ll
a
ti
on s
t
a
t
e:
th
e un
it
s
h
ou
ld
b
e p
l
ace
d
on
th
e
fl
a
t
fl
oor or
b
e moun
t
e
d
i
n
h
or
i
zon
t
a
l
direction.
Testing method:
built-in-ceiling unit:
1m
1m
1.4m
1.4m
2m
duct
auxiliary duct
2m
1.4m
1m
auxiliary duct
h
1m
1m
1m
1m
Model: AU122AEERA AB122ACERA
AC122ACERA AD122ALERA
9
3. Safety precaution
3. Safety precaution
Carefully read the following information in order to operate the airconditioner correctly.
Below are listed three kinds of Safety Cautions and Suggestions.
WARNING!
CAUTION!
Incorrect operations may result in injuries or machine damages; in some cases may
cause serious consequences.
Incorrect operations may result in severe consequences of death or serious injuries.
INSTRUCTIONS: These information can ensure the correct operation of the machine.
Be sure to conform with the following important Safety Cautions.
The Safety Cautions should be at hand so that they can be checked at any time when needed.
If the conditioner is transferred to the new user, this manual should be as well transferred to the new user.
WARNING!
If any abnormal phenomena is found
(e. g.smell of firing), please cut off the
power supply immediately, and contact
the dealer to find out the handling
method.
Don't dismantle the outlet of the
outdoor unit.
The exposed fan is very dangerous
which may harm human beings.
switch
off
In such case, to continue using the
conditioner will damage the conditioner,
and may cause electrical shock or fire
hazard.
Incorrect maintenance and repairment
may cause water leak, electrical shock
and fire hazard.
When the unit needs maintenance and
repairment, please call dealer to handle it.
After the unit being used for a long time,
the base should be checked for any
damages.
If the damaged base is not repaired, the
unit may fall down and cause accidents.
Commercial Air Conditioner
Model: AU122AEERA AB122ACERA
AC122ACERA AD122ALERA
1000
Commercial Air Conditioner
Air-conditioner can't be installed in
the environment with inflammable
gases because the inflammable gases
near to air-conditioner may cause fire
hazard.
Connect earthing wire.
Use discharge pipe correctly to ensure
efficient discharge.
Earthing wire should not be con-
nected to the gas pipe, water pipe,
lightning rod or phone line, in-correct
earthing may cause shock.
Incorrect pipe use may cause water
leaking.
Earthing
WARNING!
Installed electrical-leaking circuit
breaker.
It easily cause electrical shock without
circuit breaker.
Please let the dealer be responsible for
installing the conditioner.
Incorrect installation may cause water
leak, electrical shock and fire hazard.
Call the dealer to take measures to
prevent the refrigerant from leaking.
If conditioner is installed in a small
room be sure to take every measure in
order to prevent suffocation accident
even in case of refrigerant leakage.
When conditioner is removed or
Incorrect installation may cause water
leaking, electrical shock and fire hazard.
Nothing or nobody is permitted to
placed on or stand on outdoor unit.
The falling of goods and people may
cause accidents.
Don't operate the air-conditioner with
damp hands.
Otherwise will be shocked.
Only use correctly-typed fuse.
May not use wire or any other materials
replacing fuse, other-wise may cause
faults or fire accidents.
responsible for them.
reinstalled, dealer should be
Model: AU122AEERA AB122ACERA
AC122ACERA AD122ALERA
11
Commercial Air Conditioner
4. Net dimension
4.1 AB122ACERA
B9
A9
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240
100
900
990
655
200
880
620
605
600
40 35 35 30
199
4.2 AC122ACERA
Model: AU122AEERA AB122ACERA
AC122ACERA AD122ALERA
12
Commercial Air Conditioner
Model: AU122AEERA AB122ACERA
AC122ACERA AD122ALERA
:
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4.4 AU122AEERA
13
Commercial Air Conditioner
5. Installation Instructions
Note :
(1) Fix the parts with screws
(2) Don't intake the strong wind directly to the
outlet air-flow hole.
(3) A one meter distance should be kept from the
unit top
(4) Don't block the surroundings of the unit with
sundries
2. Selection of the place of installation
1.
Accessories
"Edging" for protection of electric wires from an
opening edge.
Select the place of installation satisfying the following conditions and, at the
same time, obtain a consent from the client or user.
Edging
Place where air circulates.
Place free from heat radiation from other heat sources.
Place where drain water may be discharged.
Place where noise and hot air may not disturb the neighborhood.
Place where there is not heavy snowfall in the winter time.
Place where obstacles do not exist near the air inlet and air outlet .
Place where the air outlet may not be exposed to a strong wind.
Place surrounded at four sides are not suitable for installation. A 1m or more
of overhead space is needed for the unit.
Mount guide-louvers to place where short-circuit is a possibility.
When installing several units, secure sufficient suction space to avoid short
circuiting.
Wind direction
NO
(2) Installation where the area with strong winds.
Install the unit so that the air outlet section of the unit must NOT be faced
toward wind direction.
(1) Open space requirement around the unit
L2
L3
L1
500
(Servicing
space)
Air outlet
Air inlet
Air
inlet
Case
Distance
Unit: mm
open
open
open
500
150
150
300
300
0
L
1
L2
L3
I
II
III
Model: AU122AEERA AB122ACERA
AC122ACERA AD122ALERA
14
Commercial Air Conditioner
(a) Concrete foundation
Anchor bolt
Concrete foundation
Unit
To fix by bolts
(b) Foundation anchor
Concrete foundation
Unit
Anchor bolt
5.1 Installation of outdoor unit
Fix the unit in a proper way according to the condition of a place where it is
installed by referring to the following .
Install the unit so that the angle of inclination must be less than 3 degrees.
Model: AU122AEERA AB122ACERA
AC122ACERA AD122ALERA
15
Installation
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Commercial Air Conditioner
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Model: AU122AEERA AB122ACERA
AC122ACERA AD122ALERA
2
16
Commercial Air Conditioner
Electric wiring
DANGER OF BODILY INJURY OR DEATH
TURN OFF ELECTRIC POWER AT CIRCUIT BREAKER OR POWER
SOURCE BEFORE MAKING ANY ELECTRIC CONNECTIONS.
GROUND CONNECTIONS MUST BE COMPLETED BEFORE MAKING
LINE VOLTAGE CONNECTIONS.
(1) Selection of size of power supply and interconnecting wires.
Precautions for Electric wiring
Electric wiring work should be conducted only by authorized personnel.
Do not connect more than three wires to the terminal block. Always use round
type crimped terminal lugs with insulated grip on the ends of the wires.
Use copper conductor only.
Select wire sizes and circuit protection from table below. (This table shows 20 m
length wires with less than 2% voltage drop.)
WARNING!
30mA
Item
Model
Phase
Switch breaker
(A)
Circuit breaker
Overcurrent
protector
Power
source wire
size
1
40
2
Switch
break
Earth leakage breaker
Leak
curren
(2) Wiring connection
Make wiring to supply power to the outdoor unit, so that the power for the indoor
unit is supplied by terminals.
For the detailed wiring connection with the indoor units, see the corresponding
indoor operation and instruction manual.
WARNING!
INTERCONNECTING WIRES MUST BE WIRED ACCORDING TO FIG.1
INCORRECT WIRING MAY CAUSE EQUIPMENT DAMAGE.
Model: AU122AEERA AB122ACERA
AC122ACERA AD122ALERA
17
AU122AEERA
26
A
40
mm
2.5
OUTDOOR UNIT
TERMINAL BLOCK
1 2 3
To Indoor Unit
Y/G
Jhmn[ff[ncih niifm
Sn[h^[l^ []]_mmilc_m
52 S]l_q ^lcp_l
62 I[]em[q
72 Elcff qcnb [ ^c[g_n_l i` :4gg
82 Jhh_l b_r[aih mj[hh_l0mbc`ncha
mj[hh_l
92 Sj[hh_l -580 5;0 5=06806;gg.
:2 Pcj_ ]onn_l
;2 Pcj_ _rj[h^_l
<2 Khc`_
=2 Pch]_lm
542 L_[e[a_ ^_n_]nil il mi[js q[n_l
552 C[h^ n[j_
562 S]l[j_l
572 R_`lca_l[hn icf
Tb_ chmn[ff[ncih niifm fcmn_^ ch nb_
`iffiqcha mb__n ][h \_ om_^ [m l_kocl_^2
Tb_ `iffiqcha j[lnm g_hncih_^ ch nbcm
g[ho[f [l_ nb_ chmn[ff[ncih []]_mmilc_m
q_ jl_j[l_^2
5
6
7
8
9
5
6
8
5/5
6/8
Ni2
B]]_mmils j[lnm
Qns2
R_gin_ ]ihnliff_l
C[nn_ls
Wcl_ ]f[gj
I_[n
jl_m_lp[ncih
mf__p_
S]l_q
S]l_q ][j
R_gin_
]ihnliff_l
\l[]e_n
:
;
5
5/5
52S_f_]ncih i` Jhmn[ff[ncih Pf[]_
-5. Pf[]_ [\ip_ nb_ ]_cfcha qb_l_ b[p_ _hioab mj[]_ ni [ll[ha_
nb_ ohcn2
-6. Pf[]_ qb_l_ nb_ ^l[ch[a_ jcj_ ][h \_ [ll[ha_^ q_ff2
-7. Pf[]_ qb_l_ chf_n [h^ ionf_n [cl i` ch^iil [h^ ion^iil ohcn qcff hin
\_ \fi]e_^2
-8. Ei hin _rjim_ nb_ ohcn ni nb_ jf[]_ qcnb b_[ps icf il gicmnol_
-_2a2ecn]b_h [h^ qilembij.2
-9. Ei hin m_n nb_ ohcn ch nb_ jf[]_ qb_l_ ^_mnlo]ncp_ a[m -mo]b [m
mof`olc] []c^ a[m. il joha_hn a[m -nbchh_l [h^ a[mifch_. ]ih]_hnl[n_m
[h^ l_n[chm2
-:. Pf[]_ mnliha _hioab ni mojjiln nb_ ohcn q_cabn2
-;. Ni _rj_hmcp_ [lnc]f_m mo]b [m n_f_pcmcih [h^ jc[hi \_fiq
ch^iil ohcn2
-<. Fhioab mj[]_ `il g[chn_h[h]_2
-=. Pf[]_ gil_ nb[h 5g [q[s `lig n_f_pcmcih [h^ l[^ci ni [pic^
^cmnol\cha n_f_pcmcih [h^ l[^ci2
-54. F[ms `il g[chn_h[h]_2
62Jhmn[ff[ncih Pl_j[l[ncih
-5. Pimcncih i` ]_cfcha ij_hcha \_nq__h ohcn [h^ momj_h^cha \ifn
-`lihn pc_q i` ohcn.2
-6. Pl_j[l_ [ff jcjcha -l_`lca_l[hn0q[n_l ^l[ch[a_ .[h^ qcl_m
-]ihh_]ncih qcl_ i` l_gin_ ]ihnliff_l0 ch^iil ohcn ]ihh_]ncih qcl_m.
ni nb_ ch^iil ohcn \_`il_ chmn[ff[ncih ch il^_l ni ]ihh_]n ch^iil ohcn
cgg_^c[n_fs [`n_l chmn[ff[ncih2
Commercial Air Conditioner
5.2 Indoor unit ins
t
allation
Model: AU122AEERA AB122ACERA
AC122ACERA AD122ALERA
Distance between
suspending bolts 535mm
Indoor unit 570mm
Ceiling opening 650mm
Ornament panel 700mm
Indoor unit 570mm
Ceiling opening 650mm
Ornament panel 700mm
Air outlet
Air outlet
Air inlet
2.5m Over
1.5m
1.5m
0.31m
H
Overlap between ceiling and
ornament panel shall be 25mm
Suspending bolts
Ceiling
Ornament panel
150mm
320mm
60mm
5.2.1 AB122ACERA
-7. Jhmn[ff [ momj_h^cha \ifn
Ti mojjiln nb_ ohcn q_cabn 0[h]bil \ifn mbiof^ \_ om_^ ch nb_ ][m_ i` [fl_[^s _rcmnm ]_cfcha2 Giq h_q ]_cfcha0
om_ `fomb1ch nsj_ \ifn0 \ocfn1ch nsj_ \ifn il j[lnm jl_n[l_^ ch nb_ `c_f^2
C_`il_ aicha ih chmn[ffcha0 [^domn mj[]_ ni ]_cfcha2
72 Jhmn[ff[ncih i` ch^iil ohcn
Jh ][m_ i` hi ]_cfcha
Jhmn[ff ohcn n_gjil[lcfs
Pon momj_h^cha \l[]e_n ih nb_ momj_h^cha \ifn ni b[ha nb_ ohcn oj2 C_ mol_ ni om_ hon [h^ q[mb_l [n \inb _h^
i` nb_ \l_[e_n ni m_]ol_ `clgfs2
B`n_l chmn[ff[ncih ih nb_ ]_cfcha
-5. B^domn ohcn ni cnm lcabn jimcncih -R_`_l ni jl_j[l[ncih `il chmn[ff[ncih1-5..
-6.Db_]e nb[n ohcn cm biltihn[f2
Pon momj_h^cha \l[]e_n ih nb_ momj_h^cha \ifn ni b[ha nb_
ohcn oj2C_ mol_ ni om_ hon [h^ q[mb_l [n \inb _h^ i` nb_
\l[]e_n ni m_]ol_ cn `clgfs2
W[n_l jogj [h^ `fi[ncha mqcn]b cm chmn[ff_^ chmc^_ ch^iil ohcn0]b_]e `iol ]ilh_lm i` nb_ ohcn `il cnm f_p_l omcha
bilctihn[f ]igj[l[nil il PVD no\_ qcnb q[n_l2-J` ohcn cm ncfncha [a[chmn nb_ ^cl_]ncih i` q[n_l ^l[ch[a_0jli\f_g
g[s i]]ol ih `fi[ncha q[n_l f_[e[a_2.
Jh nb_ ][m_ i` ]_cfcha [fl_[^s _rcmnm
-5.Jhmn[ff ohcn n_gjil[ffs
-6.B^domn nb_ b_cabn [h^ jimcncih i` nb_ ohcn2
-7.Pli]__^ qcnb jli]_^ol_ -8. i` + Jh nb_ ][m_ i` hi ]_cfcha +
Non -Pl_j[l_ ch `_cf^.
W[mb_l -Pl_j[l_^ ch `_cf^.
Somj_h^cha \ifnm
G[mn_h -^io\f_ honm.
Jhm_ln
W[mb_l `crcha j[^
-jl_j[l_^ ch `_cf^.
X m_]ol_ nb_ q[mb_l `clgfsY
f_p_f_l
Pifsnb_h_ jcj_
D_cfcha
Rii`
Bh]bil \ifn
Liha hon il nbl_[^
Somj_h^cha \cfn M54
Nin_> Bff nb_ [\ip_ g_hncih_^ j[lnm mb[ff \_ jl_j[l_^ ch `_cf^0
nb_ ^c[g_n_l i` momj_h^cha \ifn cm M54
@Jhmn[ff[ncih Fr[gjf_A
Commercial Air Conditioner
Model: AU122AEERA AB122ACERA
AC122ACERA AD122ALERA
4. Installation of water drainage pipe
(1) Install water drainage pipe
Pipe diameter shall be equal or larger than that of connecting pipe (Pipe of polythene; size: 25mm;
O.D.: 32mm )
Drainpipe should be short, with a downward slope at least 1/100 to prevent air bag from forming.
If downward slope of drainpipe cannot be made,lifting pipe shall be installed.
Keep a distance of 1-1.5m between suspending bolts, to make water hose straight.
19
Commercial Air Conditioner
Model: AU122AEERA AB122ACERA
AC122ACERA AD122ALERA
Use the drainage hose and clip provided with unit.
Insert water pipe into water plug until it reaches the white tape.
Tighten the clip until head of the screw is less than 4mm from hose.
Wind the drainage hose to the clip using seal pad for heat insulation.
Insulate drainage hose in the room.
5. Cautions for the water drainage lifting pipe
Installation height of water drainage lifting pipe shall be less than 280mm
There should be a right angle with unit ,300mm from unit.
slope over 1/100
1-1.5m
Clip
Tape(white)
Draingage hose
Large size seal pad
4mm below
(accessory)
Clip
Clip
Water drainage
lifting pipe
Suspending bracket
Drainage hose
280mm unter
500mm below
220mm
300mm below
1-1.5m
220
Drainage hose
75mm below
500mm below
< Note >
The slope of water drainage hose shall be within 75mm , make the drainage plug not to bear
excessive force.
If several water hoses join together, of as per following procedures.
Specifications of the selected drainage hoses shall meet the requirements for the unit running
6. Installation of Ornament Panel
Install ornament panel on indoor unit
(1) Check whether indoor unit is horizontal with leveler or polythene pipe filled with water , and
check that the dimension of the ceiling opening is correct. Take off the lever gauge before
installing the ornament panel.
(2) Fasten the screws to make the height difference between the two sides of indoor unit less than
5mm.
(3) Firstly fix it with screws temporarily.
(4) Fasten the two temporarily fixing screws and other two, and tighten the four screws.
(5) Connect the wires of synchro-motor.
(6) Connect the wire of signal.
(7) If no response of remote controller,check whether the wiring is correct,restart remote controller
10 seconds after shut off power supply.
Slope below 1/100
Connection drainage hose with a T-joint
100mm ¸over
20
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